So the Kawasaki parts catalogue says the ZX-10RR rear hub and sprocket are the same as the standard R version. Can anyone confirm this because I'm trying to buy a set of Marchesni wheels for my R but don't want to buy a whole new gear set. Thanks.

Yeah, brake discs are different part numbers between RR and R. And as far as I know, the RR wheels are not lighter than R wheels. So it's purely an aesthetic thing. They do look great though.

The Ninja ZX-10RR runs forged aluminum seven-spoke Marchesini wheels, with Pirelli Diablo Supercorsa SP rubber.
Are the Marchesini wheels built so the weight of the wheel are toward the center of the wheel for less gyro?Are they suposed to be 25% lighter and stiffer than stocker anyways? I am confused? You talked to the wrong folks!